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Health care

We provide affordable and personalized care

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Financial

Accounts to help you save and pay for health care expenses

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  • Resources

    Find contribution limits, savings tools, calculators and eligible expenses

  • Account support

    Find contact information and frequently asked questions

Tax season resources

Get ready for HSA tax season

If you used an HSA this year, the HSA Tax Center offers general information about contributions, eligible expenses and commonly used tax forms — all in one place.

Pharmacy

We make it easy to get medications you need, when and where you need them

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  • Optum Rx

    For people with pharmacy insurance benefits through Optum Rx

  • Track orders

    Track your home delivery and specialty order

  • Pharmacy support

    Find contact information and answers to frequently asked questions

Mobile app

Optum Rx on the go

Request refills, track order status, manage billing information and much more.

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John Williston Harris, MD

Please contact to confirm appointment availability

Please contact to confirm appointment availability

Specialty

Internal Medicine, Infectious Disease

Languages

English, Spanish

Seeing patients at

  • Gender

    Male

    Board certifications

    American Board of Internal Medicine

    Licenses

    CA, A137473

    Employed or contracted

    Contracted

    Network Name

    Optum Care Network California

    NPI

    1356648703

    Hospital affiliations

    Providence Saint Joseph Medical Center

  • Medical School

    • Instituto Superior De Ciencias Medicas De La Habana

      2002

    Residency

    • New York Methodist Hospital

      2010

    Internship

    • New York Methodist Hospital

      2009

    Fellowship

    • State University of NY - Brooklyn

      2013